Final answer:
Mesopotamia included all of the lands between the Tigris River and the Sinai Desert. It is commonly known as the Cradle of Civilization due to its significance in the development of human culture and civilization.
Step-by-step explanation:
Mesopotamia, meaning "land between rivers," is a region that includes all of the lands between the Tigris and Euphrates Rivers. It is commonly known as the Cradle of Civilization and is located in present-day Iraq. The rivers provided a regular supply of water in a fertile region, which allowed for agriculture and the development of complex urban centers.
Nineveh, Ur, and Babylon, were situated in an area of fertile land that supported early urban development due to the policies and innovations introduced by its inhabitants to manage the water resources provided by the Tigris and Euphrates rivers.